Giants
Astronomers Push to Redefine ‘Planet’—but Pluto Is Still Left Out
A broadened definition of what constitutes a planet will be proposed next month, one that would include planets existing beyond our solar system.
For many people, the definition of a planet was only made clear in 2006, when the spunky world Pluto was demoted from a planet to a dwarf planet. Now, a team of astronomers is pushing for “planet” it… [+3656 chars]
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